RealTek Digital Problem

Hello.

I recently formatted my computer as I wanted a fresh start with my new desk. After I completed the formatting I noticed I can only get sound if I put my headset (Siberia 840 Steelseries) as Default Playback Device. Before I had Realtek as default and got sound and now I do not. The ''Soundbar'' on the right that shows the Volume is pumping up and down on Realtek Digital when Default but no sound come from the headset.

tl:dr No Sound when using Realtek as Default Playback Device using Steelseries Siberia 840 after reformatting.

Have taken contact with Steelseries about it as well but write here in hope I can get some help from ROG community.